Extract helper function.

third_party/WebKit/Source/core/layout/line/InlineTextBox.h

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2009, 2010, 2011 Apple Inc.
  *               All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 117 matching lines @@
  public:
   TextRun constructTextRunForInspector(const ComputedStyle&) const;
   LayoutRect frameRect() const {
     return LayoutRect(x(), y(), width(), height());
   }
 
   virtual LayoutRect localSelectionRect(int startPos, int endPos) const;
   bool isSelected(int startPos, int endPos) const;
   void selectionStartEnd(int& sPos, int& ePos) const;
 
-  // These functions both paint markers and update the DocumentMarker's

[Andrey Kraynov, 2016/12/21 17:43:18]

This comment seems outdated at the moment.
paintDocumentMarker* functions have nothing to do with markers rect, and can
take just a |const &| instead of a pointer.

-  // renderedRect.
   virtual void paintDocumentMarker(GraphicsContext&,
                                    const LayoutPoint& boxOrigin,
-                                   DocumentMarker*,
+                                   const DocumentMarker&,
                                    const ComputedStyle&,
                                    const Font&,
                                    bool grammar) const;
   virtual void paintTextMatchMarkerForeground(const PaintInfo&,
                                               const LayoutPoint& boxOrigin,
-                                              DocumentMarker*,
+                                              const DocumentMarker&,
                                               const ComputedStyle&,
                                               const Font&) const;
   virtual void paintTextMatchMarkerBackground(const PaintInfo&,
                                               const LayoutPoint& boxOrigin,
-                                              DocumentMarker*,
+                                              const DocumentMarker&,
                                               const ComputedStyle&,
                                               const Font&) const;
 
   void move(const LayoutSize&) final;
 
  protected:
   void paint(const PaintInfo&,
              const LayoutPoint&,
              LayoutUnit lineTop,
              LayoutUnit lineBottom) const override;
@@ skipping 75 matching lines @@
            (expansion() && nextLeafChild() ? TextRun::AllowTrailingExpansion
                                            : TextRun::ForbidTrailingExpansion);
   }
 };
 
 DEFINE_INLINE_BOX_TYPE_CASTS(InlineTextBox);
 
 }  // namespace blink
 
 #endif  // InlineTextBox_h